Description
GDA1, Single Deflection, Aluminum construction.
Horizontal Face Blades
GDA10-H Aluminum Fins
GDA17-H Steel Opposed Blade Damper
GDA18-H Aluminum Fins with Air Scoop
Vertical Face Blades
GDA10-V Aluminum Fins
GDA17-V Steel Opposed Blade Damper
GDA18-V Aluminum Fins with Air Scoop

GDA2, Double Deflection, Aluminum construction.
Horizontal Face Blades
GDA20-H Aluminum Fins
GDA27-H Steel Opposed Blade Damper
GDA28-H Aluminum Fins with Air Scoop
Vertical Face Blades
GDA20-V Aluminum Fins
GDA27-V Steel Opposed Blade Damper
GDA28-V Aluminum Fins with Air Scoop

GDS1, Single Deflection, Steel construction.
Horizontal Face Blades
GDS10-H Aluminum Fins
GDS17-H Steel Opposed Blade Damper
GDS18-H Aluminum Fins with Air Scoop
Vertical Face Blades
GDS10-V Aluminum Fins
GDS17-V Steel Opposed Blade Damper
GDS18-V Aluminum Fins with Air Scoop

GDS2, Double Deflection, Steel construction.
Horizontal Face Blades
GDS20-H SteelFins
GDS27-H Steel Opposed Blade Damper
GDS28-H Steel Fins with Air Scoop
Vertical Face Blades
GDS20-V Steel Fins
GDS27-V Steel Opposed Blade Damper
GDS28-V Steel Fins with Air Scoop
